Oil way assembly of valve and execution device

Abstract

The utility model discloses an oil way assembly of a valve and an execution device. The oil way assembly comprises an oil tank, a pump part and an integrated valve set. The integrated valve group comprises a first one-way valve, a second one-way valve, a third one-way valve, a fourth one-way valve and an electric control two-position two-way valve; according to the electric control two-position two-way valve, the first one-way valve and the second one-way valve can achieve the pressure maintaining function of a hydraulic circuit when the hydraulic circuit works without being powered on, so that locking at any position is achieved, the electric control two-position two-way valve is in a powered-off state in a normal state, and when emergency situations such as power failure occur, the electric control two-position two-way valve is not powered off. The electric control two-position two-way valve is switched on after being powered off, an oil cavity of the telescopic oil cylinder can rapidly relieve pressure through the electric control two-position two-way valve, the telescopic oil cylinder is made to be in an undamped free follow-up state, the elastic piece can freely drive a telescopic rod of the telescopic oil cylinder and the gate plate to move in an emergency state, and therefore the gate is opened or closed. The execution device comprises a fixing frame, a telescopic oil cylinder, an elastic piece and an oil way assembly.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of engineering machinery, in particular to an oil circuit assembly of a valve and an execution device. BACKGROUND

[0002] Gate valves are widely used in mine water supply and drainage systems due to their simple structure and good sealing performance. The movement of the gate inside the gate valve is controlled by the execution device to control the on-off of the valve. The existing execution device has the following problems: 1. It is difficult to realize the emergency opening or closing of the valve in the case of power failure; 2. The existing method of driving the gate movement by motor rotation and torque increase of the reducer can reduce labor intensity and realize remote control, but it is difficult to start with load, the overload protection is not easy to realize, and often causes structural impact damage. In the harsh working environment of the mine underground, its working stability is difficult to guarantee. CONTENT OF THE UTILITY MODEL

[0003] The valve oil circuit assembly and execution device provided by the embodiments of the present application can be negotiated in an emergency state, thereby realizing emergency closing or opening of the valve.

[0004] The present application provides an oil circuit assembly of a valve, comprising an oil tank, a pump and an integrated valve group; the inlet of the pump is in communication with the oil tank; the integrated valve group comprises a first one-way valve, a second one-way valve, a third one-way valve, a fourth one-way valve and an electrically controlled two-position two-way valve; the first outlet of the pump is in communication with the inlet of the first one-way valve and the third one-way valve respectively, and the outlet of the first one-way valve is in communication with the first oil chamber of the telescopic oil cylinder; the two end oil ports of the third one-way valve are in communication with the oil tank and the second oil chamber of the telescopic oil cylinder respectively; the telescopic oil cylinder is connected with the gate plate of the valve; the second outlet of the pump is in communication with the inlet of the second one-way valve and the fourth one-way valve respectively, and the outlet of the second one-way valve is in communication with the second oil chamber of the telescopic oil cylinder; the two end oil ports of the fourth one-way valve are in communication with the oil tank and the first oil chamber of the telescopic oil cylinder respectively; the inlet of the electrically controlled two-position two-way valve is in communication with the first oil chamber and the second oil chamber respectively, and the outlet of the electrically controlled two-position two-way valve is in communication with the oil tank.

[0005] The valve oil circuit assembly and execution device of the present application have at least the following beneficial effects:

[0006] During operation, the oil circuit assembly of the present application activates the pump element and alternately discharges oil through the first and second outlets. High-pressure oil can, on the one hand, drive the telescopic cylinder through the first or second one-way valve, causing the gate to slide on the valve body, thereby controlling the opening and closing of the valve. On the other hand, it can serve as a control oil circuit to open the third or fourth one-way valve, allowing one oil chamber of the telescopic cylinder to quickly relieve pressure. The first and second one-way valves can maintain hydraulic circuit pressure when not powered, thereby achieving locking at any position. The oil circuit assembly of the present application is also provided with an electrically controlled, two-position, two-way valve. Under normal conditions, the electrically controlled, two-position, two-way valve is in an energized, disconnected state. In an emergency such as a power outage, the electrically controlled, two-position, two-way valve is de-energized and connected. The oil chamber of the telescopic cylinder can be quickly de-pressurized through the electrically controlled, two-position, two-way valve, placing the telescopic cylinder in an undamped, free-following state. An external reset device (e.g., an elastic member) can freely drive the telescopic rod and gate of the telescopic cylinder to perform emergency movements, thereby opening or closing the gate. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0008] Figure 1 It is a schematic diagram of the oil circuit assembly of this application;

[0009] Figure 2 It is a front view of the device for executing the present application;

[0010] Figure 3 It is a structural diagram of the execution device of this application;

[0011] Figure 4 yes Figure 3 Schematic diagram of the structure of the telescopic cylinder, fixed frame and gate plate;

[0012] Figure 5 yes Figure 4 Enlarged view of point A in the middle;

[0013] Figure 6 yes Figure 3 Schematic diagram of the middle fixing frame, elastic member, telescopic rod and connecting screw;

[0014] Description of the reference numerals is as follows:

[0015] 10. Fuel tank;

[0016] 20. Pump parts;

[0017] 30. Integrated valve group; 31. First one-way valve; 32. Second one-way valve; 33. Third one-way valve; 34. Fourth one-way valve; 35. Electrically controlled two-position two-way valve; 36. Relief valve; 37. Fifth one-way valve; 38. Sixth one-way valve; 39. Pressure sensor;

[0018] 40. Fixing bracket; 41. First chassis; 42. Mounting column; 43. Second chassis; 44. Nut;

[0019] 50. Telescopic cylinder; 51. Telescopic rod;

[0020] 60. Elastic parts;

[0021] 70. Connecting piece; 71. Connecting sleeve; 72. Pressure plate; 73. Pressure tongue;

[0022] 80. Displacement sensor;

[0023] 90. Valve body;

[0024] 100, gate;

[0025] 110. Connecting screw. DETAILED DESCRIPTION

[0026] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is merely to provide a better understanding of the present application by illustrating the examples of the present application.

[0027] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0028] This embodiment discloses a valve oil circuit assembly and actuator. The valve in this embodiment is configured as a gate valve, comprising a valve body 90 and a gate plate 100. The gate plate 100 can slide up and down relative to the valve body 90 to control the valve opening. The actuator's telescopic oil cylinder 50 drives the gate plate 100 to slide up and down.

[0029] like Figure 1 As shown, the oil circuit assembly of this embodiment is first described. The oil circuit assembly includes an oil tank 10, a pump component 20 and an integrated valve group 30;

[0030] like Figure 1 As shown, the pump component 20 can refer to existing pump structures. In this embodiment, the pump component 20 is configured as a gear pump. The gear pump can output bidirectional hydraulic oil through forward and reverse rotation. The hydraulic oil is pressurized by the gear pump and output to the integrated valve group 30. In this embodiment, the pump component 20 is disposed on one side of the oil tank 10, and the inlet of the pump component 20 is connected to the interior of the oil tank 10. The pump component 20 has two outlets, respectively configured as a first outlet and a second outlet. The pump component 20 can output high-pressure oil at the first outlet or the second outlet through forward and reverse rotation.

[0031] like Figure 1 As shown, the integrated valve group 30 includes a first one-way valve 31, a second one-way valve 32, a third one-way valve 33, a fourth one-way valve 34 and an electrically controlled two-position two-way valve 35;

[0032] The inlet of the first one-way valve 31 is connected to the first outlet of the pump member 20, and the outlet of the first one-way valve 31 is connected to the first oil chamber (rodless chamber) of the telescopic cylinder 50. The high-pressure oil at the first outlet flows into the first oil chamber through the first one-way valve 31, thereby driving the telescopic rod 51 of the telescopic cylinder 50 to extend.

[0033] The inlet of the second one-way valve 32 is connected to the second outlet of the pump member 20, and the outlet of the second one-way valve 32 is connected to the second oil chamber (rod chamber) of the telescopic cylinder 50. The high-pressure oil at the second outlet flows into the second oil chamber through the second one-way valve 32, thereby driving the telescopic rod 51 of the telescopic cylinder 50 to retract.

[0034] The third one-way valve 33 can be a hydraulic one-way valve or a spring-loaded one-way valve. The oil ports (inlet and outlet) at both ends of the third one-way valve 33 are connected to the oil tank 10 and the second oil chamber respectively. At the same time, the control oil circuit of the third one-way valve 33 is connected to the first outlet of the pump component 20. The high-pressure oil at the first outlet serves as a control signal of the third one-way valve 33, thereby driving the third one-way valve 33 to conduct, so that the oil in the second oil chamber can flow back to the oil tank 10.

[0035] The fourth one-way valve 34 can be a hydraulically controlled one-way valve or a spring-loaded one-way valve. The oil ports (inlet and outlet) at both ends of the fourth one-way valve 34 are connected to the oil tank 10 and the first oil chamber respectively. At the same time, the control oil circuit of the fourth one-way valve 34 is connected to the second outlet of the pump component 20. The high-pressure oil at the second outlet serves as the control signal of the fourth one-way valve 34, thereby driving the fourth one-way valve 34 to conduct, so that the oil in the first oil chamber can flow back to the oil tank 10.

[0036] The inlet of the electrically controlled, two-position, two-way valve 35 (a normally closed solenoid valve) is connected to the first and second oil chambers, respectively, and the outlet of the electrically controlled, two-position, two-way valve 35 is connected to the oil tank 10. When the electrically controlled, two-position, two-way valve 35 is in the on state, the oil in the first and second oil chambers can flow back into the oil tank 10 through the electrically controlled, two-position, two-way valve 35. The electrically controlled, two-position, two-way valve 35 is connected to an external power source. When the electrically controlled, two-position, two-way valve 35 is energized, the electrically controlled, two-position, two-way valve 35 is in the off state. In the event of an emergency power outage, the electrically controlled, two-position, two-way valve 35 loses power and switches to the on state, allowing the oil in the first and second oil chambers to flow back into the oil tank 10.

[0037] like Figure 1 As shown, in some preferred embodiments, the integrated valve group 30 further includes a relief valve 36; the inlet of the relief valve 36 is respectively connected to the first outlet and the second outlet of the pump member 20, and the outlet of the relief valve 36 is connected to the oil tank 10. When the high-pressure oil pressure of the first outlet and the second outlet is greater than the set value, the high-pressure oil overflows back into the oil tank 10 through the relief valve 36, thereby ensuring the stability of the oil circuit.

[0038] like Figure 1 As shown, in some preferred embodiments, a fifth one-way valve 37 is provided between the inlet of the relief valve 36 and the first outlet of the pump element 20. The fifth one-way valve 37 allows high-pressure oil to flow from the first outlet to the relief valve 36 in one direction, thereby ensuring oil circuit stability. A sixth one-way valve 38 is provided between the inlet of the relief valve 36 and the second outlet of the pump element 20. The sixth one-way valve 38 allows high-pressure oil to flow from the second outlet to the relief valve 36 in one direction, thereby ensuring oil circuit stability.

[0039] like Figure 1 As shown, in some preferred embodiments, the oil circuit assembly also includes a pressure sensor 39, which is respectively connected to the first outlet and the second outlet of the pump component 20. The high-pressure oil pressure of the first outlet and the second outlet is monitored by the pressure sensor 39. The pressure sensor 39 can output an analog signal to the outside, which is convenient for remote monitoring and protection.

[0040] like Figure 2 and Figure 3As shown, this embodiment also discloses a valve actuator, the valve includes a valve body 90 and a gate plate 100, and the actuator includes a fixing frame 40, a telescopic oil cylinder 50, an elastic member 60 and an oil circuit assembly;

[0041] like Figure 4 and Figure 5 As shown, the fixing bracket 40 is disposed on the valve body 90 and is used to provide a mounting location for components such as the telescopic cylinder 50 and the elastic member 60. The fixing bracket 40 includes a first chassis 41, mounting posts 42, a second chassis 43, and nuts 44. The first chassis 41 is disposed on the valve body 90. A plurality of mounting posts 42 are vertically disposed on the first chassis 41 at equal intervals along the circumference of the first chassis 41. The upper ends of the mounting posts 42 are provided with stepped surfaces, and threaded ends extend upward from the stepped surfaces. The second chassis 43 is provided with apertures corresponding to the threaded ends. The apertures of the second chassis 43 are sleeved over the threaded ends, and the lower surface of the second chassis 43 is in contact with the stepped surfaces. Nuts 44 are threadedly connected to the threaded ends in a one-to-one manner, and the nuts 44 abut against the upper surface of the second chassis 43, thereby pressing the second chassis 43 against the stepped surfaces of the mounting posts 42. The fixing bracket 40 of this embodiment uses a detachable second chassis 43, making the overall structure easy to assemble and disassemble.

[0042] like Figure 5 As shown, the telescopic cylinder 50 is vertically mounted on the second chassis 43. The telescopic cylinder 50 extends and retracts in the same direction as the sliding direction of the gate plate 100, both in the up-and-down direction. The telescopic rod 51 of the telescopic cylinder 50 is connected to the gate plate 100. The telescopic cylinder 50's extension and retraction drive the gate plate 100 to slide, thereby opening and closing the valve. In some embodiments, the telescopic rod 51 of the telescopic cylinder 50 is connected to the gate plate 100 via a connector 70. The connector 70 includes a connecting sleeve 71. The upper end of the connecting sleeve 71 is hingedly connected to the telescopic rod 51 via a hinge pin. The lower end of the connecting sleeve 71 is provided with an inwardly extending threaded hole. The upper end of the gate plate 100 is provided with an upwardly extending connecting screw 110. The connecting screw 110 extends upward through the center of the first chassis 41 and is threadedly connected to the threaded hole of the connecting sleeve 71. In this embodiment, the hinged connection between the telescopic rod 51 and the connecting sleeve 71 provides a certain degree of structural flexibility. Furthermore, the designed connecting sleeve 71 facilitates the connection of the telescopic rod 51 to the gate plate 100.

[0043] like Figure 6As shown, in some preferred embodiments, the connecting member 70 further includes a pressure plate 72 and a pressure tongue 73. The pressure plate 72 is coaxially connected to the connecting screw 110. A plurality of pressure tongues 73 are arranged on the pressure plate 72 at equal intervals along the circumference of the pressure plate 72. The lower end of the elastic member 60 (spring) abuts against the upper surface of the pressure plate 72. The plurality of pressure tongues 73 can fasten the lower end of the elastic member 60 to the pressure plate 72. The upper end of the elastic member 60 abuts against the lower surface of the second chassis 43. When the telescopic rod 51 is retracted upward, the pressure plate 72 moves upward, causing the elastic member 60 to be compressed. In addition, in some embodiments, the pressure plate 72 and the pressure tongue 73 can be omitted. Instead, the lower end of the elastic member 60 can be directly connected to the connecting screw 110 of the telescopic rod 51 or the gate 100. In this way, the elastic member 60 can also play the automatic valve closing function in an emergency.

[0044] In some preferred embodiments, Figure 1 As shown, the telescopic cylinder 50 is equipped with a displacement sensor 80. This displacement sensor 80 monitors the extension and retraction positions of the telescopic cylinder 50 in real time via a magnetic ring fixed to the telescopic rod 51. The external system can adjust the valve opening by receiving feedback from the displacement sensor 80 on the position of the telescopic cylinder 50.

[0045] In this embodiment, the telescopic cylinder 50 has a first oil chamber (rodless chamber) and a second oil chamber (rod chamber), the outlet of the first one-way valve 31 of the oil circuit assembly is connected to the first oil chamber, and the outlet of the second one-way valve 32 of the oil circuit assembly is connected to the second oil chamber.

[0046] The working principle of the execution device of this embodiment is as follows:

[0047] The telescopic rod 51 of the telescopic cylinder 50 extends: the pump component 20 pumps the oil in the oil tank 10 from the first outlet of the pump component 20 to the first one-way valve 31 and the third one-way valve 33, and the high-pressure oil enters the first oil chamber through the first one-way valve 31 to drive the telescopic rod 51 of the telescopic cylinder 50 to extend. At the same time, the high-pressure oil enters the third one-way valve 33, making the third one-way valve 33 conductive, and the oil in the second oil chamber flows back to the oil tank 10 through the third one-way valve 33.

[0048] The telescopic rod 51 of the telescopic cylinder 50 retracts: the pump component 20 pumps the oil in the oil tank 10 from the second outlet of the pump component 20 to the second one-way valve 32 and the fourth one-way valve 34, and the high-pressure oil enters the second oil chamber through the second one-way valve 32 to drive the telescopic rod 51 of the telescopic cylinder 50 to retract. At the same time, the high-pressure oil enters the fourth one-way valve 34, making the fourth one-way valve 34 conductive, and the oil in the first oil chamber flows back to the oil tank 10 through the fourth one-way valve 34.

[0049] When the telescopic rod 51 of the telescopic oil cylinder 50 extends, the telescopic rod 51 drives the gate plate 100 to be connected with the connecting screw 110 downwards to block or partially block the internal flow passage of the valve body 90, so as to control the opening degree of the valve, and when the telescopic rod 51 retracts, the gate plate 100 opens the internal flow passage of the valve body 90 upwards, at this time, the elastic member 60 is pressed due to the upward movement of the telescopic rod 51, when the emergency power-off occurs, the electric control two-position two-way valve 35 of the oil way assembly is switched to the conducting state due to power-off, the oil liquid in the first oil cavity or the second oil cavity of the telescopic oil cylinder 50 flows back to the oil tank 10 through the electric control two-position two-way valve 35, at this time, the telescopic rod 51 of the telescopic oil cylinder 50 is in the natural follow-up state, the elastic member 60 can drive the telescopic rod 51, the pressing disc 72, the connecting screw 110 and the gate plate 100 to reset downwards under the action of the elastic force, so that the gate plate 100 instantaneously blocks the internal flow passage of the valve body 90, thereby realizing the function of emergency valve closing.

[0050] The above is only a specific implementation of the present application, and those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described system, module and unit can refer to the corresponding process in the foregoing method embodiments, which will not be described here. It should be understood that the protection scope of the present application is not limited to this, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed in the present application, and these modifications or replacements should be covered within the protection scope of the present application.

Claims

1. A valve oil circuit assembly, characterized in that: It comprises an oil tank (10), a pump component (20) and an integrated valve group (30); The inlet of the pump member (20) is in communication with the oil tank (10); the integrated valve group (30) comprises a first one-way valve (31), a second one-way valve (32), a third one-way valve (33), a fourth one-way valve (34) and an electrically controlled two-position two-way valve (35); The first outlet of the pump member (20) is communicated with the inlet of the first one-way valve (31) and the third one-way valve (33) respectively. The outlet of the first one-way valve (31) is communicated with the first oil chamber of the telescopic oil cylinder (50). The oil ports at both ends of the third one-way valve (33) are communicated with the oil tank (10) and the second oil chamber of the telescopic oil cylinder (50) respectively. The telescopic oil cylinder (50) is connected to the gate plate (100) of the valve. The second outlet of the pump member (20) is communicated with the inlet of the second one-way valve (32) and the fourth one-way valve (34), respectively. The outlet of the second one-way valve (32) is communicated with the second oil chamber of the telescopic oil cylinder (50). The oil ports at both ends of the fourth one-way valve (34) are communicated with the oil tank (10) and the first oil chamber of the telescopic oil cylinder (50), respectively. The inlet of the electrically controlled two-position two-way valve (35) is communicated with the first oil chamber and the second oil chamber respectively, and the outlet of the electrically controlled two-position two-way valve (35) is communicated with the oil tank (10).

2. The oil circuit assembly according to claim 1, characterized in that: It also includes a relief valve (36); the inlet of the relief valve (36) is communicated with the first outlet and the second outlet of the pump member (20) respectively.

3. The oil circuit assembly according to claim 1, characterized in that: A fifth one-way valve (37) is provided between the inlet of the overflow valve (36) and the first outlet of the pump member (20), and a sixth one-way valve (38) is provided between the inlet of the overflow valve (36) and the second outlet of the pump member (20).

4. The oil circuit assembly according to claim 1, characterized in that: It also includes a pressure sensor (39), which is connected to the first outlet and the second outlet of the pump (20) respectively.

5. A valve actuator, the valve comprising a valve body (90) and a gate (100), characterized in that: The actuator comprises a fixing frame (40), a telescopic oil cylinder (50), an elastic member (60), and the oil circuit assembly according to any one of claims 1 to 4; The fixing frame (40) is arranged on the valve body (90), the telescopic oil cylinder (50) is arranged on the fixing frame (40), the telescopic rod (51) of the telescopic oil cylinder is connected to the gate plate (100), and the gate plate (100) is driven to move by the telescopic rod (51) of the telescopic oil cylinder; the elastic member (60) is connected to the telescopic rod (51), and the elastic member (60) is used to drive the telescopic rod (51) and the gate plate (100) to move, thereby controlling the opening and closing of the valve; the oil circuit assembly is connected to the first oil chamber and the second oil chamber of the telescopic oil cylinder (50).

6. The execution device according to claim 5, characterized in that: A connecting piece (70) is provided at the end of the telescopic rod (51), and the connecting piece (70) includes a connecting sleeve (71). One end of the connecting sleeve (71) is threadedly connected to a connecting screw (110) provided on the gate plate (100), and the other end of the telescopic rod (51) is hinged to the connecting sleeve (71).

7. The execution device according to claim 6, characterized in that: The connecting member (70) further comprises a pressure plate (72) and a pressure tongue (73), wherein the pressure plate (72) is connected to the connecting screw (110), one end of the elastic member (60) abuts against the surface of the pressure plate (72), and the other end of the elastic member (60) abuts against the fixing frame (40), and the telescopic direction of the elastic member (60) is configured as the telescopic direction of the telescopic rod (51), and a plurality of pressure tongues (73) are arranged along the circumference of the pressure plate (72), the pressure tongues (73) are connected to the elastic member (60), and the pressure tongues (73) are used to press the elastic member (60) against the pressure plate (72).

8. The execution device according to claim 5, characterized in that: The fixing frame (40) includes a first chassis (41), a mounting post (42), a second chassis (43) and a nut (44). The first chassis (41) and the second chassis (43) are arranged relative to each other along the telescopic direction of the telescopic rod (51). One end of the mounting post (42) is connected to the first chassis (41), and the other end is provided with a step surface, and a threaded end is provided on the step surface. The lower surface of the second chassis (43) is in contact with the step surface, and the nut (44) is threadedly connected to the threaded end and presses the second chassis (43) against the step surface.

9. The execution device according to claim 5, characterized in that: The invention also comprises a displacement sensor (80) arranged on the telescopic oil cylinder (50), and the displacement sensor (80) is used to monitor the extended position and the retracted position of the telescopic rod (51).

10. The execution device according to any one of claims 5 to 9, characterized in that: The elastic member (60) is configured as a spring; and the pump member (20) of the oil circuit assembly is configured as a gear pump.

Images